Syringe.



PATBNTED JAN. 30, 1906.

G. C. WEGEFARTH.

SYRINGE.

APPLICATION FILED 11:13.23. 1904.

2 SHEETS-SHEET 1 G60/y@ Y @ye/af @uern 110.811,111. PATENTED JAN. 30, 1906.

u Gl Cn SYRINGE.

APPLICATION FILED FEB. 23. 1904.

2 SHEETS-SHEET 2.

GEORGE C. VVEGEFARTH, OF BALTIMORE, MARYLAND.

SYFKIINGE..

Specification of Letters Patent Patented Jan.' 30, 1906.

Application led February 23, 1904. Serial No. 194,901.

To all whom t may con/cern:

Be it known that I, GEORGE @.Wnennnnfrn, a citizen of the United States, residing at Baltimore, State of Maryland, have invented a new and useful Syringe, of which the following is a speciication.

This invention relates to syringe-nozzles, and more especially to nozzles of the type in which separate ducts are provided for the introduction of fluid and for its Withdrawal.

The principal object of the present invention is to provide a nozzle of the type speciiied in which means are provided for instantly opening or closing each duct independently of the other by a movement of the thumb of the hand in which the nozzle is held.

A further object of the invention is to provide a syringe-nozzle of the type specified in which the parts are of such character and are so united that they may be quickly disconnected to permit thorough sterilization of the nozzle.

With the objects above mentioned and others of minor importance in view, as will appear when the invention is fully disclosed, the sameconsists in the novel construction and arrangement of the parts of a syringenozzle, as hereinafter described and claimed.

In the drawings, Figure l is a perspective view of the nozzle in the hand of the operator, the hand being indicated in dotted lines. Fig. 2 is a longitudinal section through the complete nozzle. Fig. 3 is a detail view of the centering device for the induction-tube. Fig. 4 is alongitudinal section through arnodified form of nozzle. Fig. 5 is a longitudinal section through another modified form of nozzle. Fig. 6 is an end view of the nozzle shown in Fig. 5.

Referring to the drawings, in which. corresponding parts are designated by similar characters of reference throughout, and more particularly to Figs. l and 2, l denotes the outer shell or barrel of the nozzle, one end of which is constricted or tapered to permit insertion into relatively small cavities or orifices. The barrel will vary as to both Aform and dimensions according to the use to which the nozzle is to be put and in the 'form under consideration and those later to be described is irnperforate throughout that portion of its length which is ofthe same transverse diameter, the tapered end not being included under the term barrel.7 In the 'form of the invention referred to the shell or barrel is of the form used in the nasal or aural canal, and if it is desired touscthe nozzle in the vagina or rectum shellsfjo'f different construction, such as those shown in Figs. 4f, 5, and 6, are preferably employed.

The shell or barrel is externally threaded at its rear or outer end and is secured in an internally-threaded socket 2, through the center of which the induction-tube 3 extends. The socket 2 is provided with an annular gasket 4, against which the shell or barrel l. is screwed to form a water-tight joint, and at one side of the center' an eduction-tube 5 extends outward from the socket. The induction-tube 2 extends forward to the 'forward end of the barrel or shell and terminates just within the aperture (j at the forward end of the barrel. The aperture 6 is somewhat larger than the tube 3 to provide sufficient space for the return of the fluid to the barrel or shell, whence it escapes through the eduction-tube 5.

In order to hold the induction-tube 3 in proper position relative to the barrel or shell, a centering device 7 is mounted on the induction-tube near its forward end, and lateral displacement of the induction-tube is positively prevented by the contact of the ends of the wings of the centering device with the inner surface of the barrel l. The centering device consists, preferably, of a disk provided with a plurality of peripheral notches 8, forming intermediate wings 9, presenting wide end surfaces for Contact with the barrel or shell.

In the embodiment of the invention illustrated the induction-tube 3 forms an elbow just posterior to the socket 2 and extends laterally for a short distance before making another angle and extending rearward again. After making the second angle or elbow the induction-tube lies parallel to the eductiontube, the two tubes being spaced apart somewhat to provide space for the independent operation of a valve in each tube and to afford firm grip for the operators hand.

The valves provided in the induction and eduction. tubes are shown at l() and 1l, respectively. These valves are of precisely similar structure, each consisting of an ordinary plug arranged for rocking movement in the valve-casing and each being provided. with a bent strap or loop 12, adjustably fastened to the plug to operate the valve. The loops 12 are arranged. on the upper sides of the induction and eduction tubes, so as to be easily operable by means of the thumb of the IOO IIO

hand holding the syringe-nozzle. Each loop is provided on its outer surface with longitudinally arranged ribs 13 to prevent the slipping of the operators thumb when pressing a loop forward to open a valve or drawing it backward to close a valve.

Back of the valves 10 and 11 the tubes 3 and 5 are slightly curved downward, as shown, and are provided at their extremities with enlargements to facilitate the attachment of syringe-tubing thereto. By making the curves of both tubes downward, as shown, a firmer hold upon the nozzle is assured, and kinking of the flexible fluid supply and discharge pipes 15 and 16 is prevented.

In Fig. 4 the 1'nvention is shown as embodied in a nozzle for use in introducing fluids into therectum. In this form of the invention the shell or barrel 20 is larger than in the form already described and its extremity has a longer taper. In the tapered portion at the forward end a plurality of apertures 2() are provided to facilitate the return flow of fluid from the body. In order to adapt this form of nozzle for use in the administration of high enemas, the inductiontube 22 is threaded internally at its forward end to receive the tip 23 of a flexible boweltube 24. When the bowel-tube is attached, the fluid may be injected into the lower bowel at a point determined by the length of the tube, and upon its return to the rectum the fluid may escape through the annular space between the shell 20 and tube 22, as well as through the openings 21. Vhen the boweltube and its tip are detached, the nozzle may be employed in the usual way for administering rectal injections.

In Figs. 5 and 6 the invention is shown as embodied in a nozzle for vaginal injections. The shell 3() shown 1'n this form of the invention has a bulbous forward extremity, which should fit tolerably closely in the vagina, to prevent escape of the injected liuid between the vaginal wall and the shell of the nozzle, and in order to facilitate the escape of blood clots and other secretions through the shell with the injected fluid slots 31 are provided in the forward extremity of the nozzle.

The several forms of shell or barrel illustrated are intended merely as types, and it is to be understood that other forms fitted for special uses may be substituted at will.

From the foregoing description it will be clearly seen that the barrel may be quickly and easily detached from the rest of the nozzle structure to facilitate sterilization and as readily secured in position after sterilization.

In using each form of the improved nozzle the forward end is introduced into the body-' cavity for which it is designed, and ordinarily the valves in both induction and eduction tubes are opened to permit free entry and exit of the fiuid. After the liow of fluid into the body-cavity has been maintained long enough the valve in the induction-tube will be closed and the valve in the eduction-tube left open until the escape of the fluid from the nozzle is complete. If it is desired to keep the fluid in the body-cavity for a time and to prevent contamination of the supply of fluid in the syringe by that in the bodycavity, the valve in the eduction-tube will be kept closed during the introduction of the fluid and for some time thereafter, and the valve in the induction-tube will be closed as soon as the desired amount of fluid has entered. After the fluid has remained in the body-cavity for the requisite period the valve in the eduction-pipe will be opened and the fluid allowed to escape. This mode of using the syringe-nozzle will be resorted to most frequently when the fluids used are medicinal agents, and it is in using the syringe for this purpose that the independent operation of the two valves is most important.

Having thus described the construction and use of myinvention, what I claim as new, and desire to secure by Letters Patent, is

1. In a device of the class described, an outer imperforate shell or barrel, an induction-tube removably secured within the shell, and a peripherally-notched disk carried by theltube for centering it with relation to the she l.

2. In a device of the class described, an imperforate outer shell or barrel having its forward end open, a removable closure for the rear end of the shell, an induction-tube passing centrally through the closure and extending to the forward end of the shell, a peripherally-notched disk carried by the tube to center it relatively to the shell, an eduction-tube connected with the closure, and independently-operable valves for controlling the passage of liquid through the tubes.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

GEORGE C. I/VEGEFARTH.

fitnessesz J. H. JOOHUM, Jr., J. Ross CoLI-roUN.

TOO 

